Question

The number of atoms in the excited state becomes much greater than the number of atoms in the ground state​

Answer 1

In science, specifically statistical mechanics, a population inversion occurs while a system (such as a group of atoms or molecules) exists in a state in which more members of the system are in higher, excited states than in lower, unexcited energy states. It is called an "inversion" because in many familiar and commonly encountered physical systems, this is not possible. This concept is of fundamental importance in laser science because the production of a population inversion is a necessary step in the workings of a standard laser.

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Answer 2

Answer:

The correct answer of this question is  is called an inversion .

Explanation:

Given - Number of atoms in the excited state .

To Find  -  Write the name of the number of atoms in the excited state becomes much greater than the number of atoms in the ground state.

It is called a "inversion" since this is not conceivable in many known and regularly encountered physical systems. This notion is critical in laser science since producing a population inversion is a required step in the operation of a conventional laser.  A population inversion happens when more members of a system are in higher, excited energy states than in lower, unexcited energy states.

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